The paper discusses the statistical behaviour of targets in synthetic aperture radar (SAR) images and demonstrates how this information can be exploited for automatic SAR target classification and recognition. It describes a target-smoothing algorithm for estimating the underlying radar cross-section, which can be used with an appropriate noise model to generate many target realisations for a give...
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Many algorithms have been proposed for the segmentation and classification of SAR imagery. Typically these are heuristic in basis, and more successful on some types of imagery than others. Methods based on global optimisation techniques can achieve the optimal solution of the posed problem; the algorithm is then characterised by an objective function and the chosen optimisation technique. The auth...
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Position determination in two-dimensional (2-D) scenarios is examined. The results can apply to position location in cellular systems using the system infrastructure. It is shown that the lowest possible geometric dilution of precision (GDOP) attainable from range or pseudo-range measurements to N optimally located points is 2/√N. The significance of 2/√N in bearing-only position deter...
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The study is concerned with multiple target motion analysis (MTMA), when the system state is not directly observed. The Cramer-Rao lower bound (CRLB) is widely used reference for assessing estimation performance. The lack of explicit bounds on the performance of MTMA remains an important issue in the tracking community. The problem is an aspect of the estimation of normal mixture parameters. A gen...
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A model is presented for the Doppler spectra of low grazing angle radar backscatter from the sea surface, and is compared with data collected in the large wind-wave tank at the Ocean Engineering Laboratory (GEL) of the University of California, Santa Barbara (UCSB). The components of the Doppler model are based on the findings of an experiment conducted at the OEL in which synchronous radar and hi...
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The authors deal with the fusion of multichannel and multiresolution subsurface radar images collected by different frequency channels. Since each radar frequency is most suited for the investigation of a specific range of depths, an accurate analysis of the subsurface over an extended depth interval requires images at different channels. By exploiting the physical model of EM pulse propagation in...
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